Electronic organ with punch card registration selection system



Mardi 9, 1955 R. H. CAMPBELL, JR., ETAL 3,172,939

ELECTRONIC oRGAN WITH PUNCH CARD REGISTRATION SELECTION SYSTEM 4 Sheets-Sheet 1 Filed Feb. 26. 1960 WIEDUK SEEE/mma GEORGE BY 7,?22/

Ahh,

March 9, 1965 R. H. CAMPBELL, JR., ETAL 3,172,939

ELECTRONIC ORGAN WITH PUNCH CARD REGISTRATION SELECTION SYSTEM Filed Feb. 26. 1960 4 Sheets-Sheet 2 @@HBMB N VEN TORS RICHARD H. MPBELL JR.

lEORGE H. HADDEN ATTORN EYS March 9, 1965 R. H. CAMPBELL, JR., ETAL.

ELECTRONIC ORGAN WITH PUNCH CARD REGISTRATION SELECTION SYSTEM Filed Feb. 26, 1960 4 Sheets-Sheet 3 'fill INVET RS RICHARD H. CAMPBEOLL JR. GEORGE H. HADDEN ATTORNEYS March' 9, 1965 R. H. CAMPBELL, JR., ETAL 3,172,939

ELECTRONIC ORGAN WITH PUNCH CARD REGISTRATION SELECTION SYSTEM 4 Sheets-Sheet 4 Filed Feb. 26, 196C INVENTORS RICHARD H. CAMPBELL JR. BCBEORGE H. HADDEN MMM ATTOR NEYS United States Patent O 3,l72,939 ELECTRNEC @RGAN Wl'llll PUNCH CARD REGISTRATEUN SELECTEN SYSTEM Richard lll. Campbell, dr., and George H. Hadden, lLaconia, NH., assiguors, by mesne assignments, to The Seeburg Corporation, Qhieago, lll., a corporation of Delaware Filed Feb. 26, 1960, Ser.. No. 111,343 Claims. (Cl. SLi- 1.93)

This invention relates to electronic musical instruments and more particularly to electronic organs.

rEhe object of this invention is to provide an electronic organ having means controlled by a punch card for automatically closing selected stop switches to provide a predetermined organ registration.

Another object of this invention is to provide an electronic organ having punch card controlled means for automatically closing a selected combination of stop switches to establish a desired organ registration, each switch having a visible key which is accessible to the player so as to permit manual modification of the organ registration set up by operation of said punch card controlled means.

A `further object is to provide punch card controlled n for canceling an existing organ registration and automatically setting up a new predetermined registration.

Other objects and many of the attendant advantages of the invention will be readily appreciated as the invention becomes better understood by reference to the yfollowing detailed description when considered in connection with the accompanying drawings, wherein:

HG. l is a block diagram of an organ embodying the present invention;

FlG. 2 is a perspective view of the upper half ot an electronic organ embodying the present invention;

FIG. 3 is a side view of one of the stop key units consisting ot a stop switch and a stop key or tablet;

FlG. 3a is a plan view of a typical stop key;

FlG. 4 is a perspective view of a push button combination switch assembly which is adapted to accept tive punched cards, each of which permits attainment of a different combination of stop settings;

FlG. 5 is an enlarged sectional view taken along line otFlG. 4;

FlG. 6 is an enlarged sectional view taken along line 6-5 oi' FlG. 5;

FlG. '7 is a plan View of a blank punch card;

FIG. 7a is a perspective view of the same card with a plurality ot holes punched therein in a predetermined pattern; and

8 is a schematic diagram of the circuitry ernbodied in the Punch Card Registration Selection System.

rlhe present invention is embodied in an electronic organ whose organization is shown generally in FlG. l. The outputs or tone signals (C, C?, D, Eli, etc.) or a plurality of tone generators 5l are select-ively coupled to an output system 53 by switches which are operated by keys in two keyboards S5, 57, properly identified as the swell and great manuals. Although not shown, it is to be understood that additional tone signal selection may be afforded by pedal switches operated by depressing selected toot pedals. The selected tone signals are amplified by suitable bus ampliers 59, 6l and then applied to the output system 53. The output system E3 is outlined by a broken line in FIG. l. lt includes a plurality of stop switches 63 which normally are operated manually by manipulation of stop keys S located on the front of the organ. The stop switch organization 63 is commonly called a stop action assembly. These stop switches 63 operate to channel 3,l72,939 Patented Mar. 9, 1965 ICC tone signals selected by playing of both keyboards 55 and 57 to a plurality of voicing circuits 65, 67, each voicing circuit having its own stop switch. Certain of these stop switches 63 are depressed by the organist so as to selectively feed the outputs of the voicing circuits 65, 67 rst to a vibrato circuit d@ and then to an output amplilier 7l, or directly to the output power amplifier 71 if no vibrato effect is desired.

lt is to be noted that the tone signals produced by playing of both manuals 55 and S7 may be fed to a common panel or group of voicing circuits, or, as shown in FIG. 1, each manual may have its own panel of voicing circuits d5 and 67, respectively. As used herein, the term voicing circuit denotes any circuit which alters the sound or harmonic content of the audio tones normally associated with a given key on the keyboard. These voicing circuits are essentially tone lters which lilter the raw tone signals produced by the tone generators and convert them to one of the recognizable organ voices, eg., tlute, oboe, diapason, etc.

lt is to be noted also that the organ may include other conventional coupling circuits (not shown), eg., a great to swell l-foot coupling circuit, or a percussion circuit which will also be cut into or out of operation by means or" separate stop switches.

To the extent already described, the organization illustrated in FlG.,l is conventional and substantially the same as the system shown in FlGS. l and 2 of our copending application Serial No. 808,098 for Electronic Organ, tiled April 22, 1959, now Patent N0. 3,005,229. To this organization there is added a punch card registration selection system. This system operates to turn stop switches ON in a registration, ie., selection pattern or combination, determined by holes punched in a card inserted into the system through a suitable slot in the front of the instrument. T his system also provides means 'for automatically canceling a previous registration when a new predetermined registration is demanded by the player.

FlG. 2 illustrates the keyboard section of an organ embodying the present invention. The swell keyboard 2 and great keyboard are shown. Above the two keyboards on a flat vertical panel o there are several difterent groups of controls, including a plurality of stop keys or tablets il. Each tablet is connected to one end of the operating lever of a stop switch which is adapted to channel keyed tone signals to a particular voicing circuit. Each tablet or stop key and its associated stop switch makes up a single stop key unit, and the combined group of stop key units is commonly referred to as the stop action assembly. Preferably, each stop switch is of the type shown in FIG. 3. Details of the stop switches are described hereinafter.

Substantially all of the punch card registration selection system is mounted on the underside of a horizontal metal panel ld which is located below the stop switch assembly and above the swell manual. Only a portion of panel i4 extends out beyond vertical panel 6; the remainder is located behind it. Formed integraal with horizontal panel 14 is .a vertical panel 16 which has live thin elongated horizontal slots 13, each adapted to receive a punch card. Mounted in panel 'i6 above slots ld are tive buttons Ztl. Each of these buttons can actuate the punch card registration selection system. A sixth cancel button 22 is provided to cancel stops, whether set previously by .the selection system or manuallv.

FlG. 3 is a side elevation of one of the stop switch units, and it also illustrates ho-w this stopt switch u nit .is connected into the system of FIG. 1. As shown in FlG. 3, each stop switch has a front plate 2d which is attached by suitable screws (not shown) to the rear of .zontail panel 14. Vswitch unit, and it essentially contains tive push button ,n panel 6. Front plate 25 carries two electromagnets 28 and 39, a U-shaped braclcet 32, and a lever 34. Lever 34 extends through a suitable slot in plate 26 and is pivotally secured to the plate by a pivot pin 36. To the front end of lever 34 is attached one of the stop keys or tablets '3. The rear end of lever 34tis fitted with ran arcuate icrosshead 38. It is to be noted that the combination of crosshead 3S and each magnet is essentially a solenoid. The ends of the cores of magnets Z8 and 3h are bevel-ed as shown at 4t) `and 42, respectively, to substantially match the slope of the adjacent surfaces of crosshead. When magnet 28 is energized, it attracts the crosshead, causing the lever to pivot to the OFF position. The OFF position may be considered the normal position, and it is the position occupied by arm 34 in FIG. 3. When magnet 3@ is energized, arm 34 is pivoted to the ON position shown by broken lines in FIG. 3.

The rear sur-tace of crosshead 33 is notched, and in the notch is disposed one end of an arm or detent d4 which extends through a hole in the rear leg 43 of bracket 32. This one end yof detent 4d is enlarged so as to provide a shoulder 46 which acts as a stop or retainer for a compression spring 48. Crosshead 3S urges d-etent 4d in a direction to compress spring 43 against the rear leg d3 of bracket `32, and it also functions to pivot the detent from the full line OFF position to the dotted line ON position shown in FIG. 3. The spring acts to keep the detent in the position to which it is moved by operation of lever 34.

Secured to the rear leg of bracket 32 are two terminals 50 and 52 which are insulated from each other and also from bracket 32. Terminal 52 is connected to aground, and terminal `Sil is connected to one of the bus amplifiers. Secured to terminals 5t) and 52 are respective separate wire contact elements 5d and 55. A third terminal 5S is also secured to bracket 32. Terminal 58 is insulated from the bracket and is normally connected to one of the voicing circuits. Secured to this third terminal is a spring wire contact e@ which tends to engage .a horizontally extending portion of contact 54. However, normally it is forced by detent 44 into contact with a horizontally extending portion of grounded contact 56, and it engages contact 54 only when detent 44 is pivoted to its dotted line position. In the latter position, detent 44 exerts no pressure on Wire contact 60. The OFF magnet 4i-tl and the ON magnet 42 are energized from a 12-volt source, but energization of the magnets is controlled and effected through the punch card registration selection system. One connection .to magnets 28 and 3@ is made .at respective soldering `terminals 62 and 64. The other connection for both magnets is made :through a common soldering terminal 66.

FIGS. 4-6 show details of the operating mechanism of the punch card registration selection system which is mounted behind panel 16 on the underside of hori- T-his mechanism is la combination operated multicontact switches and a sixth push button operated switch having a single pair of contacts. Each of the tive push button switches contains one movable contact for each stop key unit, and these movable contacts are disabled by insertion of a punch card, except where holes are punched. Each of these live push button switches also contains a separate movable contact referred to herein as Ithe start contac differently `from the other movable contacts.

The mechanism shown in FIGS. 4 6 comprises a dat rectangular printed ycircuit board 7i) on which thirty-six spaced conductors 72 are mounted. The rst `and yall odd-numbered conductors, identified as 72a in FIG. 6, have enlarged terminal segments 7d at the lett-hand end of the board. The second and all even-numbered conductors, identified as 72b in FIG. 6, have enlarged terminal segments 76 at the right-hand end of the board.

Of course, not all of these conductors need be used. The number used depends upon the number of stop key units in the stop action assembly. As pointed out hereinafter, conductors 72 tare connected at terminals 74 and 7e to the circuits for energizing the ON magnets.

The conductors '72 are separa-ted into `groups so as to leave tree spaces to accommodate six rows of screws 78 which cooperate with nuts 80 to clamp angle bars 82 to the underside of the board. Each row of screws (except the leftmost one in FIG. 4) and their associated nuts function to hold down on the upperside of the vboard a plurality of elongated flat elements consisting of a card guide and spacer 34 formed of insulating material, a metal spacer 36, a dat leaf spring member 88, .and a .top metal spacer 9d. The screws in the leftmost row (FIG. 4) and their associated nuts hold down only a ycard guide and spacer 84 and a metal spacer 36. Each of the leaf spring elements S3 has a hat, relatively stir", metal switch plate 94.'- attached to it adjacent its free longitudinal edge. Attached to the underside of each metal plate 94 is a resilient metal strip 36 formed with a lirst series of depending, spaced, concave, resilient switch -contact members 98 along one edge and `a second series of identical switch contact members ldd along the opposite edge. Contact members 98 are disposed alternately with contacts itil, with contacts 93 disposed above conductive strips 72a .and cont-acts itlti `disposed above conductive strips 72b. Each spring member S8 is formed so .as to maintain contacts 9S and iii@ normally tout of engagement with the conductive strips 72. FIGS. 5 and 6 illustrate this norm-al position of contacts 93 and ldd. These contacts are raised high enough to permit insertion of a punched card 102 (shown in FIG. 5, but not shown in FIG. 6) which is guided between adjacent spacer plates Sd. Contacts 93 and litt) are made to engage conductors 72 by means of switch ioperating rods ltd. It is to be noted that ve oper-ating rods `lit-t are shown in FIG. 4. However, for purposes of illustration, the switch plate 9dnormally associated with the leftmost operating rod has been omitted from FIG. 4.

Rods tti-t carry buttons 2t? referred to previously in connection with FIG. l. These rods are mounted in two parallel angle supports i106 and 10d and are held in a normal extended position by means of compression springs llltl. These springs act between the rear angle iron itlS and collars Sill?. mounted on the individual rods. Each rod carries a transversely extending pin lle which rotatably supports two wheels M6. rlfhese wheels are normally engaged by switch plate 9d; but so long as rods 10ft are in extended position, contacts 93 and Zltiti will remain spaced from the conductive strips 72. However, each plate 94 has a raised arcuate cam follower portion 11S. When rods ldd are in extended position, wheels llo are in front of cam follower portions M8. When rods 104 are depressed (see the second rod from the left in FIG. 4), wheels IE6 will engage cam followers M8 and will act on them to cam plates 94 downward so as to cause contacts 98 and ld@ to engage conductors Since the switch plates 4- are grounded, engagement of a contact 98 or ltt) with a conductor 72 acts to ground that conductor and thereby initiate a sequence of relay switching operations to complete the energizing circuit for one of the ON magnets. Grounding of plates 9d may be elected in several ways. In practice, grounding is effected through panel I4 to which the circuit board is secured by screw connectors ILti.

It is to be noted that insulating plates S4 are spaced from each other so as to form a guideway 122 having a width just sufficient to readily receive a punch card ltlZ. FIG. 7 illustrates a card Id?. in its unpunched form. The card is made of insulating material, e.g., plastic. As seen in FIG. 7, the card has thirty-six numbered circles i125 arrange-d in two rows, with the even numbers in one row and the odd numbers in the other row. These thirtyrsix circles correspond to the thirty-six conductors 72 on circuit board 7d. These circles are so arranged that when the card is inserted fully into a guideway 122 through one of the slots i8, the centers of the even-numbered circles will be above the even-numbered conductors and the centers of the odd-numbered circles will be above the oddenu .ibered conductors. lt is to be noted that the rear support ltltl for push button bars ltld acts as a stop for the card so as to properly locate the circles above the conductors. lf a punched card is located in one of the guideways, it will permit only those contacts which are located above holes 127 therein to make contact with conductors 72, thereby to complete the energizing circuits for the ON magnets of those stop switches whose numbers correspond to the numbers of the circles punched out ol the card. At this point, it is to be noted that each stop switch tablet d will bear a suitable designation of function, eg., 8-foot ute, l6-oot cello, etc., plus a number corresponding to a numbered circle on the punched card.

FlG. 3a, or example, shows a tablet 8a or a 4-foot utc stop switch. This tablet has a circle numbered 27. Hence, to have a card function to operate the 1f-foot flute stop switch, it will be necessary to punch out the circle having the number 27. FlG. 7a illustrates a card M2 with holes l2? punched in a predetermined pattern. For clarity, the numbered circles have been omitted from this ligure. However, it is to be understood that the punched holes are approximately the same size as or slightly smaller than the numbered circles.

The combination switch assembly illustrated in FlG. 4 will accommodate live cards, one in each of the multicontact push button operated switches, Although operation of any of the push button rods lillis designed to close selected stop switches, the desired registration will not be attained if a previous registration is not canceled lirst. Although this cancellation may be accomplished in Vhe regular manner by manually flipping up all tablets S that are in down position, it is preferred that cancellation ot a previous registration be elected automatically upon pressing in any one of the select buttons Ztl or the cancel button 22. For this purpose, the circuit board 'itl is provided with two conductors 124i and lZd. These two conductors have enlarged terminal segments l2@ and i3@ at one end for connection to the energizing circuits of all of the OFF magnets of the stop switches. At their opposite ends they are connected by two insulated leads ll3'2. and i3d to switch contacts l@ and ll respectively which are mounted on a bracket lli@ attached to angle bar ldd. Contacts i3d and i3d are normally opere ie., separated, and they are closed by operation of a push button rod lll?, which carries cancel push button 22. A compression spring 'ld-i normally keeps rod M2 extended out of engagement with contact lid. When cancel button 22 is pressed, rod luft-2 will torce contact to close on contact ld, whereupon to cause energization of all or the OFF magnets.

Conductors 124 and 12o may be connected also by operation of push buttons 2b. To accomplish this, live pairs of resilient start switch contacts T146 and "Mld are secured to conductors lid and 21.26. rThese start switch contacts are located directly in line with the rear ends of rods ltlfl, and they are normally open. rl`hey are closed by rods lll-t when the rods are depressed. Rods ldd are insulated from contacts ldd and lle-h by rubber caps lil@ on their rear ends. Contacts ldd and MS are so located that contact lll will close on contact leo after contacts 93 and lll-il engage conducto-rs 72, and will reopen before conductors '72 and contacts 98 and lili? are disengaged. The reason for this sequence of operations is set forth below in connection with the description of the circuit in FlG. 8.

FlG. S illustrates the circuitry embodied in the punch card registration selection system. The illustrated circuit consists ot four parts: (o) a relay system, (b) a DC. power supply, (c) a limited number of stop key units, and (d) the push button switch circuit limited for convenience to the conductors 72a, 72b, and contacts 98 and lll@ which are associated with the limited number of stop key units selected for illustration purposes. For convenience of illustration, only ve stop key units are shown. rl`hese are the first, second, third, thirty-fifth, and thirtysixth units. rThe Oli-"F and ON magnet coils 23 and 3th respectively are shown in their correct relative positions, with the GN coils Il@ acting to pivot tablets S down and the OFF coils "ifi acting to pivot them up again.

The relay system consists of two relays lldt and 162,

with its own RC time delay circuit and transient suppressing diode. Relay ldd has its coil 164 connected at one end to ground. The other end of coil lddis connected through a series resistor 166 and a lead leb to the first side of all of the OFF magnet coils 28. A capacitor ltl is connected across coil lod in series with resistor les. lelay tot? has a movable contact W2 which is normally closed on a iirst xed contact 74. Relay lldtl has a second fixed contact 17o on which contact 172 closes when coil lod is energized. Fixed Contact 17d is grounded. Fixed contact ld is connected to lead los. Contact E712 is connected to a lead lli?, which is common to the second side of all of the @PF magnets 28 and the first side of all the ON magnets 3d.

Relay lo?, has its coil l connected at one end to ground. T he other end is connected by a series resistor die to a iirst movable contact 86. A capacitor ld is connected across coil L32. Movable Contact lilo is normally closed on a i'irst fixed contact i9@ which is connected to common lead 173. When coil 182 is energized, contact closes on a second fixed contact 192 which is connected by a lead it-fl to printed circuit conductor ld. rlille adjacent printed circuit conductor 126 is connected by a lead we to the positive side of a l"-volt DC. power supply 1.98. The negative side of this power supply is grounded.

Relay lei has a second movable contact 2d@ which is normally closed on a third fixed contact 2&2. Contacts .ldd and Ztltl operate together. However, when coil l is energized, contact 2u@ opens relative to iiXed Contact 202 but does not close on any other contact. Movable contact fallu is connected to lead lM. Fixed contact 2@ is connected to lead 63. A first diode 2do is connected between leads lod and 178 to short out transients produced by current decay in the @FF magnets. A second diode 2.23 is connected between ground and lead l'l'S to short out transients produced by current decay in the ON magnets.

The second side oi each ON magnet coil 23 is connected by a lead @lila-e to a corresponding conductor 'Zcz-e as the case may be. Thus, the #l conductor 72a is connected by a lead Zilla to the ON magnet of the #l stop lcey unit, the #2 conductor 72b is connected by a lead Zltlb to the ON magnet of the #2 stop key unit, the #3 conductor 72e is connected by a lead lidc to the N magnet of the #3 stop key unit, etc. For convenience, since only ive stop units are represented, the leads connecting the thirtyditth thirty-sixth conductors gd and its to their corresponding ON coils are designated Zlfd and Ellie, respectively.

@poration of the circuit is as follows:

When any registration selection button Ztl is pressed, conductors Mld and llo are connected together, and this supplies power through contact of relay lo?, to the first side of all ot the OFF coils. Since the second side of the OFF coils is normaly connected to ground through contacts l'Z and ll of relay loll, all ot the GFF coils will be immediately energized. When this occurs, all of the stop keys or tablets t are moved to the OFF position, thereby disconnecting the voicing circuits associated with these stop keys from the bus amplifiers.

At the same that the OFF coils are energized, power coming through contact WZ of relay ldZ feeds through resistor ldd to the coil ot the rst relay loll.

Movable ecause of the time constant of resistor 166 and capacitor 170, operation of the rst relay lull is delayed a few milliseconds, thus giving the OFF coils time to restore all of the stop tablets to OFF position before rst relay it@ is operated. At this sarne time, the first diode Ztld shorts out the transient produced by the current decay in the OFF coils.

Upon operation of the iirst relay Mil, contact 172 closes on iixed contact H6, thereby connecting the common lead l78 of all of the OFF and ON coils thru contact Zilli and switch la to the positive side of the power supply. Any of the punch card contacts 98 and tu@ which have been allowed to engage their corresponding conductors 72a or 72b by virtue of holes in the punch card 102 will provide a connection to ground for the ON coils to which their corresponding conductors are connected. Since the other (common) side of these ON coils has been connected via contacts i7@ and 202 to the positive side of the power supply by operation of rst relay lett, the associated ON coils will be energized so as to move their associated stop action keys 8 to the ON position. 'The stop action keys 8 which will be moved to the ON position are the ones which correspond in number to the punched holes on the control punch card which has been inserted via a slot 1S into the multicontact switch which was actuated by pressing in its push button Ztl.

When relay le@ is energized to open contact 74, and close contact V76, power is also supplied through contact i9@ and resistor ld to the coil 82 of the second relay 162. However, operation of the second relay M2 is delayed by the time constant of its associated resistor ld and capacitor 188, thereby giving the ON coils time to operate. When relay 162 operates, its Contact 25.92 is opened, thereby removing power from coil 16dof relay 160 and all of the ON coils 39. At this time, diode 2tlg operates to short out the transient induced in the ON coils and relay lot) releases. Closing of Contact i92 operates to establish a holding circuit for relay 162 so as to prevent the system from recycling until the selected push button has been released. When a push button Ztl is released Contact 148 opens thereby releasing relay lez. Both relays 160 and M2 are thus de-energized and the stop keys 8 corresponding to the hole pattern in the card 1.02 for the switch button 2t) which was actuated are in ON position.

If a push button is released before the second relay 162 has had time to operate, power is removed from the stop action coils by the opening of the start contacts 14d which are operated by the selected push buttton rod. Again, diode 263 will short out any transient.

lt is to be noted that if one of the punched card contacts 9&5 or le@ should open before either the related start contact M3 or contact 202 of relay M2, its corresponding ON coil would not be connected to any suppressor diode; and, therefore, an objectionable transient would result. Therefore, as described previously, the start contacts 146 and i458 are so located that when a push button 20 is released, the start contact 148 which has been closed by depression of that push button will open before any of the punched card contacts associated with that same push button.

An important feature of the invention described above and illustrated in the drawings is that the stop action keys or tablets 8 may be operated independently of the punch card registration selection system. Thus, if a player inserts a card in an appropriate slot iii and depresses the associated button 2i) so as to obtain the registration or combination determined by the arrangement of holes punched in the card, he can alter the selected combination by turning ofi stop keys which have been turned on by the automatic selection system, or he may add to the combination by turning on stop keys which have not been effected by the punched card selection system.

A further feature of this invention is the provision of a single cancel button 22 for automatically canceling out any existing stop key registration. It is immaterial how the existing stop key registration was produced, whether by manual operation of the stop keys or by automatic operation under the inliuence of the automatic punched card control system or both; it will still be canceled fully by operation of the cancel button Z2. When button 22 is pressed, contacts E36 and E38 close to couple power to the OFF coils 28 through contacts 206, filZ, T72, and l/i.

The cancellation effected by operation of the single cancel button or any of the live combination selection buttons is almost instantaneous, and the time required to establish the new combination preset in a punched card is equally fast. This is particularly advantageous where a large number of stops have been turned down and the player desires to cancel all of them in the middle of a particular selection and to establish a new registration without any noticeable interruption in playing.

Obviously, many modications and variations of the present invention are possible in the light of the above teachings. Therefore, it is to be understood that the invention is not limited in its application to the details of construction and arrangement of parts specilically described or illustrated, and that within the scope of the appended claims, it may be practiced otherwise than as specincally described or illustrated.

We claim:

l. An electronic organ comprising a plurality of tone generators, a plurality of voicing circuits, a stop action assembly having a group of stop switches operable when closed to channel the outputs of said tone generators to ditferent ones of said voicing circuits, separate electrically powered means for opening and closing each of said stop switches, an array of contacts respectively energizable for closing said stop switches, means for receiving and registering a removable punch card relative to said array, and manually operable punched card scanning means for first operating said electrically powered means for opening all of said stop switches and then selectively applying electrical power to said stop switch closing means according to a pattern of holes in a given punched card registered with said array.

2. ln an organ having a plurality of selectively available voices, the combination comprising a plurality of manually operable stop switches for selecting one or more of said voices, electrical means coupled to said switches and individually operable to select or remove the respective voice controlled by said switches, a` plurality of pushbutton switches selectively operable and connected in circuit with said electrical means for controlling said electrical means and said stop switches coupled thereto in timed sequence iirst to remove all of said voices and then select a predetermined combination of said Voices, each of said push-button switches including an array of contacts respectively energizable to operate said electrical means to select a corresponding voice, means for receiving a removable code card registered relative to said array of contacts, and contactors movable by operating said pushbutton switches to energize only those contacts in said array corresponding to the code on said card.

3. Apparatus according to claim 2 in which said array of contacts is generally coextensive with the area occupied by said code card when received in said push-button switch and said contactors energize contacts in said array through perforations in said code card.

4. ln an organ having a plurality of stop switches each manually operable by means of a stop key for selecting 0r removing a different stop, first and second solenoids for each stop switch, said irst solenoid operating said switch to select a stop and said second solenoid operating said switch to remove that stop, a plurality of multi- Contact selector switches each having a set of separate switch circuits for individually energizing said first solenoids and a common switch circuit for energizing all of said second solenoids, a control circuit operable upon envases actuation of any of said selector switches to energize in sequence said common switch circuit and then said separate switch circuits, means for removably receiving a perforated code card in position relative to said separate switch circuits to determine by the perforate code on said card a predetermined combination of said separate switch circuits, and means for completing only the combination of said separate switch circuits from any one selector switch selected by said code to energize the corresponding combination of said iirst solenoids.

5. An organ comprising a plurality of stop switches each manually operable by means of a stop key for selecting or removing a different stop, first and second solenoids for each stop switch, said first solenoid operating said switch to select a stop and said second solenoid operating said switch to remove that stop, a plurality of multicontact selector switches each having a set of separate switch circuits for individually energizing said first solenoids and a common switch circuit for energizing all ot said second solenoids, a stop selection contact matrix connected between the respective multi-contacts of said selector switches and said first solenoid of each ot said said stop switches, means for completing a selected combination of circuits in said matrix for selecting a correspending combination of said stop switches, an electrical time delay, an energizing circuit connecting all of said common switch circuits for energizing simultaneously all of said second solenoids and said electrical time delay, said electrical time delay being -operative to operate said iiist solenoids of said combination of said stopy switches, after the delay introduced by said electrical time delay has permitted all of said second soleneids to operate all of said stop switches to remove all of said stops.

References Cited in the tile of this patent UNITED STATES PATENTS 1,819,820 Kent Aug. 18, 1931 2,541,051 Hanert Feb. 13, 1951 2,699,085 Zuck Ian. 11, 1955 2,855,816 Olson et al Oct. 14, 1958 2,954,716 Raymond Oct. 4, 1960 FOREIGN PATENTS 772,233 Great Britain Apr. 1G, 1957 772,234 Great Britain Apr. 10, 1957 

1. AN ELECTRONIC ORGAN COMPRISING A PLURALITY OF TONE GENERATORS, A PLURALITY OF VOICING CIRCUITS, A STOP ACTION ASSEMBLY HAVING A GROUP OF STOP SWITCHES OPERABLE WHEN CLOSED TO CHANNEL THE OUTPUTS OF SAID TONE GENERATORS TO DIFFERENT ONES OF SAID VOICING CIRCUITS, SEPARATE ELECTRICALLY POWDERED MEANS FOR OPENING AND CLOSING EACH OF SAID STOP SWITCHES, AN ARRAY OF CONTACTS RESPECTIVELY ENERGIZABLE FOR CLOSING SAID STOP SWITCHES, MEANS FOR RECEIVING AND REGISTERING A REMOVABLE PUNCH CARD RELATIVE TO SAID ARRAY, AND MANUALLY OPERABLE PUNCHED CARD SCANNING MEANS FOR FIRST OPERATING SAID ELECTRICALLY POWERED MEANS FOR OPENING ALL OF SAID STOP SWITCHES AND THEN SELECTIVELY APPLYING ELECTRICAL POWER TO SAID STOP SWITCH CLOSING MEANS ACCORDING TO A PATTERN OF HOLES IN A GIVEN PUNCHED CARD REGISTERED WITH SAID ARRAY. 